84 660 427 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with PRP test

No factors below 2⁷⁶

TF target 2⁷⁵

P-1

B1 =	675000
B2 =	13331250

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-09-18	George Woltman	B1B5FC42DDB9A4EF	72561600	1	3
Verified	Certified Good Power=8	2022-02-07	ATH	B1B5FC42DDB9A4EF	0	1	3

History

Date	User	Type	Result
2024-06-11	James Heinrich	NF	no factor TF: 68-69
2022-02-10	Praxeis	CERT	Proof certified good
2022-02-07	ATH	C-PRP	Proof Certified Good Proof Power: 8
2018-09-18	George Woltman	C-PRP	B1B5FC42DDB9A4EF
2017-11-30	Oliver Kruse	NF-PM1	B1=675000, B2=13331250, E=12
2017-05-28	TheJudger	NF	no factor TF: 75-76
2017-05-19	Brian Beuning	NF	no factor TF: 74-75
2017-05-05	-anonymous-	NF	no factor TF: 73-74
2017-02-02	Judge Hale	NF	no factor TF: 72-73
2017-02-02	Judge Hale	NF	no factor TF: 71-72
2014-03-03	GrunwalderGIMP	NF	no factor TF: 70-71
2014-01-16	timc995	NF	no factor TF: 69-70
2014-01-14	Carsten Kossendey	NF	no factor TF: 68-69
2013-12-17	David_Dirkx	NF	no factor TF: 67-68
2013-12-14	David_Dirkx	NF	no factor TF: 66-67
2012-09-13	Carsten Kossendey	NF	no factor TF: 65-66
2010-12-14	Architects Cubed	NF	no factor TF: 64-65